Third-rail insulator.



L. M. RANDOLPH.

THIRD RAIL INSULATOR.

APPLIGATION FILED MAY 2, 1907,

Patented May 25, 1909.

Attest:

LEONARD M.

Eric.

' I NEWARK,-NEW JERSEY, A CORPORATION OF NEW JERSEY.

THIRD-RAIL INSULATOR.

To all whom it may concern:

Be it vknownfth'atl LEONARD M. RAN- noLri-r, a citizen of the UnitedStates, and a resident of the city of Newark, in the county of EssexandState of New Jersey, have invented certain new and usefulImprovements in Third-Rail Insulators, of which the follow ing is aspecification, reference being had to the accompanyingdrawings, forminga part hereof.

The objectoi' this invention is to provide a third-railinsulator whichcan be manufactured cheaplyfrom materials usually kept in stock, thatis, from materials which 101' the most part do not have to be made toorder, and which ca'n; be conveniently assembled and installed.

The invention'will be more fully explained in connection with the iaccompanying drawings in'which it is illustrated and in which,

Figure 1 is a view in elevation, upon a plane transversetolthe'direction of the rail, the rail being indicated in dotted lines,and, Fig. 2 is asimilar view upon a plane at right angles to the planeof Fig. '1. The improved insulator comprises essentially three parts, abase a which is formed of channel iron, arail support b which is formedof a portion of an I-beam, and a connecting piece of insulating material0 between the channel iron base and I-beam rail. support.

The insulator or insulating material 0 is preferably shaped like thefrustum of a cone having two flat portions however, which flt againstthe sides ofthe channel iron base and prevent the insulator fromtwisting. It is preferably loosely secured. to the base by means of alug (Z upon thebase which engages a corresponding hole'in the bottom ofthe insulator. TheiLbeam support 7) is of a suit able size to receiveand accommodate the rail and is looselyheld upon the top of the insulating material 0 by means of a lug f upon said support which extendsdown into the in sulating material,'wherebylthe support I) is capable ofrelative movement in a vertical direction and of rotation in ahorizontal plane with respect to the insulator c. In order toSpecification of Letters Patent.

Patented May 25, 1909.

Application filed May 2, 1907. Serial No. 371,400.

help maintain the rail in its position within the support 7), one oftheflanges of the support, as the flange e, is preferably bent over soas to more or less engage the rail. The corresponding flange on theother side is also slightly curved. The railis inserted by first placingthe base flange ofthe rail within the flange e and then bringing theother side down within the flange of the support I) on the other side.

I claim as my invention 1. A third-rail insulatorcomprising a shortsection of channel iron, a short section of an I-beam, and insulatingmaterial between said sections.

A third-rail insulator comprising a short section of channel iron for abase, a short section of an I-beam for a rail support, and insulatingmaterial between the base and the support.

3. A third-rail insulator comprising a short section of channel iron fora base, a short sec tion of an I-beam for a rail support, and insulatingmaterial between them and to which they are loosely connected.

4. A third-rail insulatorcomprising a short section of channel iron fora base, an insulator in the shape of a frustum of a cone upon the base,and a short section of an I-beam for a rail support loosely mounted uponthe insulator.

5. A third-rail insulator comprising a short section of channel iron fora base, a short section of an I-beam for a rail support, both of whichsections are provided with a lug, and an insulator between said base andsupport in which the lugs rest.

6. A third-rail insulator comprising a channel iron base, an insulatorupon the base, and an I-beam rail support upon the insulator, one of theflanges of the support being bent over to secure the rail.

This specification signed and witnessed this 29th day of April, 1907.

LEONARD M. RANDOLPH.

Signed in the presence of:

LUCIUS E. VARNEY, AMBROSE L. OSHEA.

